Skip to content
Grist home
All donations DOUBLED

Articles by Staff Writer Joseph Winters

Joseph Winters Headshot srcset="https://grist.org/wp-content/uploads/2021/09/MG_5093.jpg?quality=75&strip=all

Featured Article

No human organ is safe from microplastic contamination, it seems — not even the testicles. 

Researchers at the University of Mexico recently tested 70 samples of testicular tissue — 47 from dogs and 23 from humans — and found microplastics in every single one. The attention-grabbing study, published last week in the journal Toxicological Sciences, highlights microplastics’ “pervasive presence” in male reproductive systems, and their potential consequences on male fertility. 

The study isn’t the first to identify microplastics in the human male reproductive system; that came last year, when a small-scale analysis identified microplastics in 6 out of 6 testes and 30 out of 30 semen samples. The new paper built on that research by examining many more testes and finding more than 20 times as much microplastic in human samples as the previous study. The most dominant polymer found in the samples was polyethylene, which is the most commonly produced plastic globally. 

The findings add to a growing list of studies ... Read more

All Articles